title: Application phenomena and efficacy of concentrated acaricide dusts for northern fowl mite control on caged laying hens.
abstract: Fluorescent pigments were used to measure plumage coverage when caged laying hens were dusted for northern fowl mite, Ornithonyssus sylviarum (Canestrini and Fanzago), control. Carriage type electrostatic or high velocity backpack equipment produced superior coverage 2 hr posttreatment when the rates of 454 g (1 lb) dust per 100 or 500 hens was employed. A redistribution of dust was noted 48 hr posttreatment, and a subsequent experiment demonstrated that this phenomenon resulted from intracage cross contamination dependent upon bird caging density. Carbaryl 80% wettable powder (WP) at 454 g/1600 hens and tetrachlorvinphos 50% WP at 454 g/1000 hens provided northern fowl mite control for 11 and 5 weeks posttreatment, respectively.
mesh_terms: D000818:Animals; D012721:Carbaryl / Q000008:administration & dosage* / Q000494:pharmacology; D002645:Chickens / Q000469:parasitology* / Q000502:physiology; D004391:Dust; D005260:Female; D006799:Housing, Animal; D007300:Insect Control / Q000379:methods*; D008924:Mite Infestations / Q000517:prevention & control / Q000662:veterinary*; D011201:Poultry Diseases / Q000469:parasitology / Q000517:prevention & control*; D013751:Tetrachlorvinphos / Q000008:administration & dosage* / Q000494:pharmacology
chemical_list: D004391:Dust; D013751:Tetrachlorvinphos; D012721:Carbaryl